/Engine/Source/Runtime/Engine/Classes/Engine/NetConnection.h
Sends an NMT_CloseReason message, with the specified close reason or close reason chain. Called automatically byUNetConnection::Close, but should be called beforehand if sending a packet that will trigger a remote close.
void SendCloseReason ( [FNetCloseResult](API\Runtime\NetCore\Net\Core\Connection\TNetResult) && CloseReason )